Simplifies the structure of app_list search a bit.

athena/main/url_search_provider.cc

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "athena/main/url_search_provider.h"
 
 #include "athena/activity/public/activity.h"
 #include "athena/activity/public/activity_factory.h"
 #include "athena/content/public/scheme_classifier_factory.h"
 #include "base/strings/utf_string_conversions.h"
@@ skipping 152 matching lines @@
     // See comments in autocomplete_provider.h.
     set_relevance(match_.relevance / 1500.0);
 
     UpdateIcon();
     UpdateTitleAndDetails();
   }
 
   virtual ~UrlSearchResult() {}
 
  private:
-  // Overriddenn from app_list::SearchResult:
+  // Overridden from app_list::SearchResult:
+  virtual scoped_ptr<app_list::SearchResult> Duplicate() override {
+    return make_scoped_ptr(new UrlSearchResult(browser_context_, match_));
+  }
+
   virtual void Open(int event_flags) override {
     Activity* activity = ActivityFactory::Get()->CreateWebActivity(
         browser_context_, base::string16(), match_.destination_url);
     Activity::Show(activity);
   }
 
   void UpdateIcon() {
     SetIcon(*ui::ResourceBundle::GetSharedInstance().GetImageSkiaNamed(
         AutocompleteMatch::TypeToIcon(match_.type)));
   }
@@ skipping 93 matching lines @@
        ++it) {
     if (!it->destination_url.is_valid())
       continue;
 
     Add(scoped_ptr<app_list::SearchResult>(new UrlSearchResult(
         browser_context_, *it)));
   }
 }
 
 }  // namespace athena